cryptolocker | 19013092dd66f787e2f8b3236f835ed4dba319e909ebdccdc6454aeac6530005

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2022 18:44

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General

Target

Trojan-Ransom.Win32.Blocker.exe
Size

870KB
MD5

e93af50428fcc74af931bfed7a1dc1b2
SHA1

9d49afd20fdd7b02944c149c86e5d94038d2311f
SHA256

19013092dd66f787e2f8b3236f835ed4dba319e909ebdccdc6454aeac6530005
SHA512

2f1a273123d09c94d778830d7498813df37eb33c7adf82abd0831e9658f0eae5ec3ea8945035295074b9eb4e94f446be05f16a5ace9a62a8fee281f421e01981
SSDEEP

12288:DoqwmCU3rRTTClQzzBnBwbwZ04htC5hDHsrY+oC9Q7ICnqDNs7Q+sSG61OMk+xID:klQN/TBBw0Z0KE5hDHeH3wqa7Q+O0

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Executes dropped EXE 2 IoCs

pid	Process
4856	Avywuixyxmexxtr.exe
1124	Avywuixyxmexxtr.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	Avywuixyxmexxtr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	Avywuixyxmexxtr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 4856	3436	Trojan-Ransom.Win32.Blocker.exe	80
PID 3436 wrote to memory of 4856	3436	Trojan-Ransom.Win32.Blocker.exe	80
PID 3436 wrote to memory of 4856	3436	Trojan-Ransom.Win32.Blocker.exe	80
PID 4856 wrote to memory of 1124	4856	Avywuixyxmexxtr.exe	81
PID 4856 wrote to memory of 1124	4856	Avywuixyxmexxtr.exe	81
PID 4856 wrote to memory of 1124	4856	Avywuixyxmexxtr.exe	81

C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
  "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" "-rC:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
    "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" -w274
    3⤵
    - Executes dropped EXE
    PID:1124

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
870KB

MD5
e93af50428fcc74af931bfed7a1dc1b2

SHA1
9d49afd20fdd7b02944c149c86e5d94038d2311f

SHA256
19013092dd66f787e2f8b3236f835ed4dba319e909ebdccdc6454aeac6530005

SHA512
2f1a273123d09c94d778830d7498813df37eb33c7adf82abd0831e9658f0eae5ec3ea8945035295074b9eb4e94f446be05f16a5ace9a62a8fee281f421e01981

Download Submit
C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
870KB

MD5
e93af50428fcc74af931bfed7a1dc1b2

SHA1
9d49afd20fdd7b02944c149c86e5d94038d2311f

SHA256
19013092dd66f787e2f8b3236f835ed4dba319e909ebdccdc6454aeac6530005

SHA512
2f1a273123d09c94d778830d7498813df37eb33c7adf82abd0831e9658f0eae5ec3ea8945035295074b9eb4e94f446be05f16a5ace9a62a8fee281f421e01981

Download Submit
C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
870KB

MD5
e93af50428fcc74af931bfed7a1dc1b2

SHA1
9d49afd20fdd7b02944c149c86e5d94038d2311f

SHA256
19013092dd66f787e2f8b3236f835ed4dba319e909ebdccdc6454aeac6530005

SHA512
2f1a273123d09c94d778830d7498813df37eb33c7adf82abd0831e9658f0eae5ec3ea8945035295074b9eb4e94f446be05f16a5ace9a62a8fee281f421e01981

Download Submit
memory/1124-143-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download
memory/3436-132-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download
memory/4856-138-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download